Navegando por Assunto "Animais selvagens em cativeiro"

Agora exibindo 1 - 4 de 4

Acesso aberto (Open Access)
Determinação de hemogregarina em Boa constrictor constrictor mantidos em cativeiro
(2012-08) LUZ, Monique Araújo; MENESES, Andre Marcelo Conceição; MORAES, Carla Cristina Guimarães de; SEIXAS, Larissa dos Santos; LIMA, Dennis José da Silva; RUFFEIL, Luis Augusto Araújo dos Santos; CASTRO, Paulo Henrique Gomes de; COSTA, Antonio M.
We aimed to determine hemogregarines presence in snakes of the Boidae family kept in captivity in Pará (PA), Brazil, and to relate it with sex, clinical and hematological and ectoparasitism. This study had authorization from Sisbio/IBAMA to be done. Nineteen Boa constrictor snakes were used, belonging to the "Museu Paraense Emílio Goeldi" (Belém/ PA) and "Xerimbabo Farm" (Santo Antônio do Tauá/PA). Blood smears were examined with 400x magnification, while the parasitemia percentage was determined by counting 550 red blood cells with 1000x magnification. From the snakes studied (n=19), nine were parasitized (47.36%) and there was no correlation between hemogregarines presence, sex, clinical and hematological changes. Hemoparasitosis correlation was detected only with the ectoparasites presence; however further studies are needed to determine the real hemogregarines prevalence in snakes kept in captivity in Pará, since there is a huge gap of data in the veterinary specialized literature about the fauna of the Amazon region.
Acesso aberto (Open Access)
Expressões vocais e interação social em macacos-prego (sapajus sp.).
(Universidade Federal do Pará, 2017) RIBEIRO, Bruno Diego Lima; SILVA, Maria Luisa da; http://lattes.cnpq.br/2101884291102108; GALVÃO, Olavo de Faria; http://lattes.cnpq.br/7483948147827075
Communication is an intrinsic characteristic of living beings. Each animal communicates with others of its own or of other species in the characteristic forms of their respective groups. In social interactions individuals produce communicative signals that specify or predict likely behavioral changes in other individuals, whose responses, in turn, also generate likely behavioral changes in the former. Vocalization is an important element in animal communication and the investigation of its functions can constitute a comparative model for understanding the evolution of human communication. This study aimed to identify symbolic phenomena of communication between capuchin-monkeys (Sapajus sp.) in social interactions. Activities and social interactions in defined periods throughout the day were observed through the methods of scan sample and ad libitum. Vocalizations emitted in spontaneous occurrences (agonistic, alarm and feeding) and in planned experiments (alarm production) were recorded and described. Recordings of the vocalizations were presented to the individuals, and the behavioral responses were recorded and described. The behavior observed in captivity, compared to records in nature, presents alterations as a restricted diversity of social interactions, for example. In the vocal repertoire we identified different vocalizations related to specific behaviors, appropriate to the context. Our results are in agreement with indications of brain plasticity and social complexity of the Sapajus genus.
Acesso aberto (Open Access)
Produção in vitro de embriões de caititu (Pecari tajacu) criados em cativeiro
(Universidade Federal do Pará, 2014-06-13) FERREIRA, Ana Cássia Sarmento; GUIMARÃES, Diva Anelie de Araújo; http://lattes.cnpq.br/2891287458034896
This work considers the application of reproduction biotechniques on species Pecari tajacu designed to improve its potential for upbringing in captivity and aiming its production, conservation and the multiplication of genetical resources. To determine the maturation time in vitro, 48 females were utilized. An amount of 69 CCOs were selected and divided in 4 groups, per age and per time of MIV. They were then submitted to parthenogenetic activation in ionomycin and 6-DMAP. For the meiotic progression analysis, 165 oocytes were divided in 4 groups according to supplementation of hormones in MIV and time of maturation. For the cryopreservation, epididymal sperm of 9 males were utilized, diluted in Tris-fructose and ACP-120 and divided in groups of refrigeration at 4°C and freezing at -196 °C in the presence of glutathione (GSH), where the parameters of motility, vigor and viable sperm were evaluated, after fresh dilution and cryopreservation. For the embryo production, 97 oocytes after MIV of 36 hours were divided in groups of parthenogenetic activation, IVF and ICSI. Through parthenogenetic activation the rates of cleavages were obtained (47%) for the oocytes of females with less than 2 years of age, submitted to MIV in 36 hours. In all groups cleavages were observed, but with no significant difference (P>0,05) among the groups analysed. One blastocyst rate of 15,4% was observed only in the group of oocytes activated after MIV of 44 hours. In the meiotic progression analysis, in all times analyzed oocytes were found in MII. In the cryopreservation of the spermatozoa it was observed a drop of the parameters analyzed in the two extenders in all groups. The presence of glutathione did not interfere significantly in the parameters analyzed. In the freezing, the rates of motility and viable sperm were superior in ACP-120 (> 50%) and in the freezing in tris-fructose, 33% and 18%. The production of embryos in vitro was well succeeded in the parthenogenetic activation (62,9%) and in ICSI (52,6%). In IVF the rates were low (7%). The production of blastocyst occurred only in the partenotes embryos (4,5%). The results of this work showed the feasibility of reproductives biotechniques, such gametes conservation and in vitro production of embryos of the species Pecari tajacu.
Acesso aberto (Open Access)
Regulação comportamental em caititus (Pecari tajacu): o efeito da estrutura social na função reprodutiva de fêmeas em cativeiro
(Universidade Federal do Pará, 2014-05-02) SILVA, Suleima do Socorro Bastos da; GUIMARÃES, Diva Anelie de Araújo; http://lattes.cnpq.br/2891287458034896
The failure in the fertility of adult female collared peccary (Pecari tajacu) bred in captivity are a restrictive factor for the efficiency of production and needs further investigation. Assess the reproductive function of females reared under intensive rearing system was the objective of this research. Twenty females were monitored in family groups (controls) for 60 days, and experimental groups (female descendants grouped with unrelated males and in the absence of parents), for more 60 days. The agonistic interactions, submission, friendly and sex were recorded three times a week, social dominance was assessed by Elo-rating method and the social preference by frequency of friendly interactions. Blood was collected for measurement of plasma progesterone by solid phase radioimmunoassay and pregnancy was confirmed by ultrasound examination. In three of the four control groups, the parents remained in the highest positions in the hierarchy while in the experimental group stage, the female descendants occupied the highest posts. The frequency of received friendly interactions depended on the sex and the condition (H = 142 991 p <0.01) whereas females mothers received, on average, 2.21 times more interactions than other individuals. Males and females received equal frequencies in the experimental groups. The estrus lasted 3.6 ± 1.0 days with progesterone at 1.2 ± 0.6 ng / mL and higher frequency of copulations in the final third of this period. Sexual interactions increased during estrus in females (P = 0.0019) and males (P <0.0009), which intensified their frequency of olfactory inspection. Copulations were recorded in the early pregnancy. All pluriparous females (heavier, older and dominant) showed reproductive activity (cyclicity or pregnancy) while seven nulliparous females had periods of anestrus, short (16 days) or long (60 days) in the control group. In the experimental group all nulliparous and primiparous mated and 14 pups were born, however, only five remained after seven days of life. We demonstrate the presence of the dominance of the parents on the progeny and a mechanism for reproductive inhibition in family groupings. We suggest that nulliparous females of reproductive age are relocated from their original group for groups with unrelated males, ensuring the reproductive potential of creation and access to food, space and other resources generally preferred prioritized by dominant individuals.